Chesham and Amersham by-election 2021: result
The Chesham and Amersham by-election was held on 17 June 2021. Sarah Green (Liberal Democrat) won with 21,517 votes, 56.7% of the valid vote, a majority of 8,028 over Peter Fleet (Conservative).
The House of Commons Library describes the result as: “Liberal Democrat gain from Conservative by Sarah Green with a majority of 8,028”.
At the general election of 12 December 2019, Cheryl Gillan (Conservative) won the seat with 55.4% of the vote; at the by-election Conservative received 35.5%.
Turnout was 52.1% of the 72,828 electorate, lower than the 76.8% at that general election.
The largest change in a party's share since the general election was for Liberal Democrat, up 30.4 percentage points.
By-election result, 17 June 2021
| Candidate | Party | Votes | Share | Change |
|---|---|---|---|---|
| Sarah Green | Liberal Democrat | 21,517 | 56.7% | +30.4 |
| Peter Fleet | Conservative | 13,489 | 35.5% | −19.9 |
| Carolyne Culver | Green Party | 1,480 | 3.9% | −1.6 |
| Natasa Pantelic | Labour | 622 | 1.6% | −11.2 |
| Alex Wilson | Reform UK | 414 | 1.1% | |
| Carla Gregory | Breakthrough Party | 197 | 0.5% | |
| Adrian Oliver | Freedom Alliance | 134 | 0.4% | |
| Brendan Donnelly | Rejoin EU | 101 | 0.3% |
Electorate 72,828; valid votes 37,954; rejected ballots 54. Change is in percentage points against the previous general election, by party.
Previous general election in Chesham and Amersham, 12 December 2019
| Candidate | Party | Votes | Share | Change |
|---|---|---|---|---|
| Cheryl Gillan | Conservative | 30,850 | 55.4% | −5.3 |
| Dan Gallagher | Liberal Democrat | 14,627 | 26.3% | +13.3 |
| Matt Turmaine | Labour | 7,166 | 12.9% | −7.7 |
| Alan Booth | Green Party | 3,042 | 5.5% | +2.5 |
Electorate 72,542; valid votes 55,685; majority 16,223. The Commons Library describes it as: “Conservative hold by Cheryl Gillan with a majority of 16,223”.
All general elections and by-elections
Sources
- By-election result page
Read 15 October 2026 · SHA-256
da045a9744d6ac88… - By-election candidate results (CSV)
Read 15 October 2026 · SHA-256
4c3796e93ef9d2cc… - Previous general election result page
Read 15 October 2026 · SHA-256
20cf2ae4659da247… - Previous general election candidate results (CSV)
Read 15 October 2026 · SHA-256
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